1834 - Thomas Davenport of Vermont developed the first real electric motor ('real' meaning powerful enough to do a task) although Joseph Henry and Michael Faraday created early motion devices using electromagnetic fields.
Below is a more detailed usage of operating systems according to age group: 18 to 34 years old. Of all the smartphone users, 50% use Android as operating system, 43% use iPhone, 39% use Microsoft and 38% use RIM. Apparently, more users prefer Android.
Age Rating. The PEGI system is based on five age categories and eight content descriptors. The age categories indicate whether an interactive software product is appropriate for children from a certain age. The age categories are: 3, 7, 12, 16, 18.